diff --git a/Documentation/ABI/testing/sysfs-class-mei b/Documentation/ABI/testing/sysfs-class-mei index e9dc110650ae..5c52372b43cb 100644 --- a/Documentation/ABI/testing/sysfs-class-mei +++ b/Documentation/ABI/testing/sysfs-class-mei @@ -90,3 +90,16 @@ Description: Display trc status register content The ME FW writes Glitch Detection HW (TRC) status information into trc status register for BIOS and OS to monitor fw health. + +What: /sys/class/mei/meiN/kind +Date: Jul 2020 +KernelVersion: 5.8 +Contact: Tomas Winkler +Description: Display kind of the device + + Generic devices are marked as "mei" + while special purpose have their own + names. + Available options: + - mei: generic mei device. + - itouch: itouch (ipts) mei device. diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 7692b69abcb5..cda0829ac589 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -1430,6 +1430,9 @@ static bool mei_me_fw_type_sps(const struct pci_dev *pdev) return fw_type == PCI_CFG_HFS_3_FW_SKU_SPS; } +#define MEI_CFG_KIND_ITOUCH \ + .kind = "itouch" + #define MEI_CFG_FW_SPS \ .quirk_probe = mei_me_fw_type_sps @@ -1499,6 +1502,13 @@ static const struct mei_cfg mei_me_pch8_cfg = { MEI_CFG_FW_VER_SUPP, }; +/* PCH8 Lynx Point and newer devices - iTouch */ +static const struct mei_cfg mei_me_pch8_itouch_cfg = { + MEI_CFG_KIND_ITOUCH, + MEI_CFG_PCH8_HFS, + MEI_CFG_FW_VER_SUPP, +}; + /* PCH8 Lynx Point with quirk for SPS Firmware exclusion */ static const struct mei_cfg mei_me_pch8_sps_4_cfg = { MEI_CFG_PCH8_HFS, @@ -1528,10 +1538,11 @@ static const struct mei_cfg mei_me_pch12_sps_cfg = { MEI_CFG_FW_SPS, }; -/* Cannon Lake with quirk for SPS 5.0 and newer Firmware exclusion - * w/o DMA support +/* Cannon Lake itouch with quirk for SPS 5.0 and newer Firmware exclusion + * w/o DMA support. */ -static const struct mei_cfg mei_me_pch12_nodma_sps_cfg = { +static const struct mei_cfg mei_me_pch12_itouch_sps_cfg = { + MEI_CFG_KIND_ITOUCH, MEI_CFG_PCH8_HFS, MEI_CFG_FW_VER_SUPP, MEI_CFG_FW_SPS, @@ -1566,11 +1577,12 @@ static const struct mei_cfg *const mei_cfg_list[] = { [MEI_ME_PCH7_CFG] = &mei_me_pch7_cfg, [MEI_ME_PCH_CPT_PBG_CFG] = &mei_me_pch_cpt_pbg_cfg, [MEI_ME_PCH8_CFG] = &mei_me_pch8_cfg, + [MEI_ME_PCH8_ITOUCH_CFG] = &mei_me_pch8_itouch_cfg, [MEI_ME_PCH8_SPS_4_CFG] = &mei_me_pch8_sps_4_cfg, [MEI_ME_PCH12_CFG] = &mei_me_pch12_cfg, [MEI_ME_PCH12_SPS_4_CFG] = &mei_me_pch12_sps_4_cfg, [MEI_ME_PCH12_SPS_CFG] = &mei_me_pch12_sps_cfg, - [MEI_ME_PCH12_SPS_NODMA_CFG] = &mei_me_pch12_nodma_sps_cfg, + [MEI_ME_PCH12_SPS_ITOUCH_CFG] = &mei_me_pch12_itouch_sps_cfg, [MEI_ME_PCH15_CFG] = &mei_me_pch15_cfg, [MEI_ME_PCH15_SPS_CFG] = &mei_me_pch15_sps_cfg, }; @@ -1614,6 +1626,8 @@ struct mei_device *mei_me_dev_init(struct device *parent, dev->fw_f_fw_ver_supported = cfg->fw_ver_supported; + dev->kind = cfg->kind; + return dev; } diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h index 560c8ebb17be..00a7132ac7a2 100644 --- a/drivers/misc/mei/hw-me.h +++ b/drivers/misc/mei/hw-me.h @@ -19,6 +19,7 @@ * * @fw_status: FW status * @quirk_probe: device exclusion quirk + * @kind: MEI head kind * @dma_size: device DMA buffers size * @fw_ver_supported: is fw version retrievable from FW * @hw_trc_supported: does the hw support trc register @@ -26,6 +27,7 @@ struct mei_cfg { const struct mei_fw_status fw_status; bool (*quirk_probe)(const struct pci_dev *pdev); + const char *kind; size_t dma_size[DMA_DSCR_NUM]; u32 fw_ver_supported:1; u32 hw_trc_supported:1; @@ -76,6 +78,8 @@ struct mei_me_hw { * with quirk for Node Manager exclusion. * @MEI_ME_PCH8_CFG: Platform Controller Hub Gen8 and newer * client platforms. + * @MEI_ME_PCH8_ITOUCH_CFG:Platform Controller Hub Gen8 and newer + * client platforms (iTouch). * @MEI_ME_PCH8_SPS_4_CFG: Platform Controller Hub Gen8 and newer * servers platforms with quirk for * SPS firmware exclusion. @@ -100,11 +104,12 @@ enum mei_cfg_idx { MEI_ME_PCH7_CFG, MEI_ME_PCH_CPT_PBG_CFG, MEI_ME_PCH8_CFG, + MEI_ME_PCH8_ITOUCH_CFG, MEI_ME_PCH8_SPS_4_CFG, MEI_ME_PCH12_CFG, MEI_ME_PCH12_SPS_4_CFG, MEI_ME_PCH12_SPS_CFG, - MEI_ME_PCH12_SPS_NODMA_CFG, + MEI_ME_PCH12_SPS_ITOUCH_CFG, MEI_ME_PCH15_CFG, MEI_ME_PCH15_SPS_CFG, MEI_ME_NUM_CFG, diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 05e6ad6d4d54..86ef5c1a7928 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -885,6 +885,30 @@ void mei_set_devstate(struct mei_device *dev, enum mei_dev_state state) } } +/** + * kind_show - display device kind + * + * @device: device pointer + * @attr: attribute pointer + * @buf: char out buffer + * + * Return: number of the bytes printed into buf or error + */ +static ssize_t kind_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct mei_device *dev = dev_get_drvdata(device); + ssize_t ret; + + if (dev->kind) + ret = sprintf(buf, "%s\n", dev->kind); + else + ret = sprintf(buf, "%s\n", "mei"); + + return ret; +} +static DEVICE_ATTR_RO(kind); + static struct attribute *mei_attrs[] = { &dev_attr_fw_status.attr, &dev_attr_hbm_ver.attr, @@ -893,6 +917,7 @@ static struct attribute *mei_attrs[] = { &dev_attr_fw_ver.attr, &dev_attr_dev_state.attr, &dev_attr_trc.attr, + &dev_attr_kind.attr, NULL }; ATTRIBUTE_GROUPS(mei); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 3a29db07211d..d3a4f54c0ae7 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -445,6 +445,8 @@ struct mei_fw_version { * @device_list : mei client bus list * @cl_bus_lock : client bus list lock * + * @kind : kind of mei device + * * @dbgfs_dir : debugfs mei root directory * * @ops: : hw specific operations @@ -528,6 +530,8 @@ struct mei_device { struct list_head device_list; struct mutex cl_bus_lock; + const char *kind; + #if IS_ENABLED(CONFIG_DEBUG_FS) struct dentry *dbgfs_dir; #endif /* CONFIG_DEBUG_FS */ diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 159e40a2505d..1de9ef7a272b 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -68,7 +68,7 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_SPT, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_2, MEI_ME_PCH8_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_3, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_3, MEI_ME_PCH8_ITOUCH_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H, MEI_ME_PCH8_SPS_4_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_SPT_H_2, MEI_ME_PCH8_SPS_4_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_LBG, MEI_ME_PCH12_SPS_4_CFG)}, @@ -85,15 +85,15 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_KBP_3, MEI_ME_PCH8_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP, MEI_ME_PCH12_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP_3, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H, MEI_ME_PCH12_SPS_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H_3, MEI_ME_PCH12_SPS_NODMA_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_CNP_H_3, MEI_ME_PCH12_SPS_ITOUCH_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP, MEI_ME_PCH12_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP_3, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_LP_3, MEI_ME_PCH8_ITOUCH_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_V, MEI_ME_PCH12_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H, MEI_ME_PCH12_CFG)}, - {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H_3, MEI_ME_PCH8_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_CMP_H_3, MEI_ME_PCH8_ITOUCH_CFG)}, {MEI_PCI_DEVICE(MEI_DEV_ID_ICP_LP, MEI_ME_PCH12_CFG)},